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SIC Codes and Hardness

*Note: For definitions of terminology used throughout the product guide articles, click here.

The requirements for certain states change according to a facility's Standard Industrial Classification (SIC) code (i.e. sampling parameter requirements).

The SIC code can be set and updated in the site dashboard by clicking on it under the site/location name. The SIC codes are pre-loaded in and are searchable by number or text (ex. transportation). Many metals' limits/benchmarks are hardness dependent, so you will want to select your receiving water and the hardness (CaCO3) of the receiving waters.

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